Hi
Just to confirm - you are using 1.0 and not 1.1, 1.2, 1.3, or 1.4?
If you really are on 1.0 it is going to be easier to start again and move stuff from one repo to the other via CIFS or FTP. You will loose metadata.
If it is one of the later versions and you want to upgrade then there are details on the wiki and the forum. Earlier upgrade paths will almost certainly require support.
Andy